This wall plate is likely a contemporary piece made by the Sullivan Pottery.  It measures 3/4" thick by 7.75" in diameter.  This wall plate is decorated with an embossed 'Crab' motif.  The details are exceptional.  It is glazed in a gorgeous rose glaze, which shades light and dark, and thins at the high points accentuating the design beautifully.  It is well marked 'Sullivans' on the backside.  There is a metal hanging clip.  This lovely wall plate is in original studio condition, no apologies.  It makes a bright and cheerful presentation.